discoverynews:

how did we find out our galaxy is a spiral? It’s not like we flew out there and took a look. Grab a cup and find out…

Seeing the Milky Way Spiral in a Coffee Cup

The fact that we know it resembles the Milky Way is pretty clever given that no one has ever come remotely close to getting such a stunning view of the galaxy we live in. It’s a testament to human logic that has granted us the knowledge of the shape of our galaxy and it’s a story that starts back at the beginning of civilization.

Back when our ancestors, the view would have been stunning with the ghostly glow of thousands of visible stars arching overhead…

coffee is a funny thing…

I always forget that for most of history, the Milky Way was visible across our sky just about anywhere in the world. With an inspiration like that, it’s not hard to see how so many religions popped up.